Y chromosome found in males which influence the degree of maleness
In multicellular organisms, the shape of the cell helps determine its function. For example, red blood cells are donut-shaped to easily exchange oxygen and freely pass through narrow blood vessels while nerve cells are long so when connected to other nerve cells they can span long distances in the organism
The variety of all life forms on Earth.
Yes,because parent's are the ones who are always there to judge you through everything.
I would say D because it involves more selection but if that one is wrong it is most likely B. But I would go with D
